Bottle cap



July 16, 1935. ss 2,008,576

BOTTLE CAP Filed Feb. 5, 1934 glwuentoz Georye A Buflress'.

Patented July 16, 1935 1 UNI S ATES BOTTLE CAPT] a Ge r Buttress, s Ans s Ca if" ass snor to Lonroy Corporation,

. corporation of California Los Angeles, Galif I a Application February 5, 1934, Serial'No. 709,803

3 Claims (Cl. 215 -38) I This invention relates to a bottle cap and par tieularly pertains to caps formed of flexible sheet fibrous material for milk bottles and the like, and more especially to bottle caps of the character set forth in my co-pending applicationfor Letters Patent Serial No. 700,050, filed November 28, 1933.

An object of the invention is to provide a bottle cap which is formed of sheet; fibrous material, which is substantially flat or dish shaped before application to a bottle, and which is soformed that when positioned over the" mouth-ofthe bottle with the marginal portion of "the cap pro truding from the rim thereof, such marginal portion may be readily bent downwardly around the bottle rim and be gatheredinto a series of radially extending folds 'and in amanner which will permit of the side portions of the individual folds being connected together.

With the foregoing object in View, together with such other objects and advantages as may subsequently appear, the invention resides generally in the construction and features hereinafter de-- scribed and claimed, and illustrated by way of example in the accompanying drawing, in which:

Fig. l is a top view of the cap as initially formed;

Fig. 2 is a perspective view of the cap as formed preliminary to its application to a bottle;

Fig. 3 is a top view of another form of the cap as initially formed;

Fig. 4 is a perspective view of the cap shown in Fig. 2 as formed preliminary to its application to a bottle;

Fig. 5 is an inverted plan view of the cap showing the manner of gathering or folding the marginal portion after application of the cap to a bottle neck.

Referring to the drawing more specifically, A indicates generally a flexible sheet of fibrous material which is preferably circular in outline, but which, however, may be formed of some other marginal contour. This sheet is preferably formed of paper or pulp board of the character ordinarily used in milk bottle caps or closures and is treated with paraffin or other suitable material whereby it is rendered water resistant.

The present invention primarily resides in forming the sheet or blank A with an arrangement of fold lines to facilitate application of the cap to a bottle and efiecting bending of the marginal portion of the sheet over the rim of the bottle mouth and extending the marginal portion of sheet alongside the neck of the bottle, that is, around a substantially cylindrical body, and at the same time form a series of radially extending webs or cars.

here shown the sheet is formed with a circular foldline 5, having a diameter substantially corresponding to the outside diameter of the bottle rim." Extending radially from the circular fold line 5 is aser'ies of fold lines 6, here shown as spaced 45 apart, and leading diagonally from the point of intersection of the line 6 with the circular line 5 are fold lines? and 8 along which the sheet is adapted to be folded in a direction opposite that in which it is folded on the line 6. In the constructions shown in Figs. 1 and 2, the fold lines 6, 1 and 8 lead from'the circular line 5 to the outer margin of'the sheet with the lines I and 8 extending at corresponding angles on opposite'sides of the fold lines 5 to provide triangular shaped areas 9' and Non opposite sides of the lines 6. V

In the construction shown in Figs. 3 and 4, the radial fold lines 6 extend to the margin of the sheet while the fold lines I and 8 terminate at points spaced inwardly from the margin of the sheet and intersect radially extending fold lines I and 8 which lead from the ends of the lines 1 and 8 to the margin of the sheet. In this instance arcuate fold lines ll extend from the points of intersection of the lines I and l" to the points of intersection of the lines 8 and 8; which arcuate lines extend on arcs concentric with the circular fold line 5.

The several fold lines are formed by either scoring or crimping the sheet.

On thus forming the sheet with the score lines, the sheet may be maintained flat until applied to the bottle, however, the sheet is preferably partially bent along its several fold lines, as shown in Figs. 3 and 4 preliminary toits being applied to the bottle; the. marginal portion of the sheet being bent downwardly along the line 5, and being crimped or folded downwardly along the lines 6, thus imparting to the sheet an in-' verted dished shape.

Theareas 9 and ID are designed to be folded to extend close together when the cap is applied to the bottle and when thus folded will provide a series of radially extending webs 12, as indicated in Fig. 5, in which view the areas 9 and ID are shown as brought into intimate contact with each other.

The webs l 2 are suitably spaced apart by providing areas l3 between adjacent fold lines 1 and 8, which areas form walls adaptedrto conform to the surface of a bottle neck to which the cap is applied.

In the construction shown in Figs. 1 and 2, the

marginal portion of the cap when applied to a bottle will extend at an inward inclination over the rim of a bottle neck and will terminate at the cylindrical portion of the bottle neck, while in the construction shown in Figs. 3 and 4 the portions of the areas l3 extending between the arcuate lines I l and the margin of the sheet will project to overlie the cylindrical portion of the bottleneck. V

The caps are designed to be arranged in a stack within a magazine and to be ejected therefrom and delivered to the tops of bottles to which they are to be ailixed. While the caps as thus fed to the bottle may be substantially fiat, as shown in Figs. 1 and 2, they are preferably dish shaped, as shown inFigs. 3 and 4, that is with the sheet partly bent along the fold lines, and which folding may be effected coincident with or subsequent to formation of score lines,,as by means ofia suitable die. 7

After the cap has been applied to the bottle top, with the marginal portion of the cap protruding from the rim or mouth of the bottle, such marginal portion is forced downwardly to its position around the neck of the bottle by a suitable folding mechanism, not necessary to be here shown, but which obviously involves a means for bending the sheet along its fold lines.

As a'means for insuring register of-the cap with a folding mechanism during its application to a bottle the margin of the cap is formed with a notch I! for engagement with a guide in the cap feeding mechanism.

Ihe cap on thus being applied to a bottle is retained in place thereon in any suitable manner as by fastening the side portions 9 and In of the webs l2 together by means of an adhesive placed between the folds of the webs, by crimping the webs together, or by the use of clips.

I claim:

1. A bottle cap comprising a circular sheet of fibrous material having a circular fold line and a series of radial fold lines extending outwardly from said circular line toward the margin of the sheet, a series of pairs of diagonally extending fold lines leading outwardly from points adjacent the inner ends of said radial fold lines on opposite sides thereof, and radial fold lines leading inwardly from the margin of the sheet and intersecting said diagonal fold lines.

2. A bottle cap comprising a circular sheet of fibrous material having a circular fold line and a'series of radial fold lines extending outwardly from said circular line toward the margin of the sheet, a series of-pairs of diagonally extending fold lines leading outwardly from points adjacent the inner-ends of said radial fold lines on opposite sides thereof, radial fold lines leading inwardly from the margin of the sheet and intersecting said diagonal fold lines, and arcuate fold lines extending concentric with the circulariold line: leading between the points of intersection of the last named radial fold lines and said diagonal fold lines. l V V 3. A bottle cap comprising a sheet or fibrous material formed with a series of radial. fold lines extending inwardly from the margin thereof terminating at their inner ends in spaced relation to each other, a seriesof pairs of diagonally extending fold lines leading outwardly from said radial fold lines on opposite sides thereof, and radial fold lines leading inwardly from the margin of the sheet and intersecting said diagonal fold lines.

GEORGEA. Bu'I'rRnss. I v 

